Canned food is usually good for several years. Be sure to check the "use by" dates. Some are coded though, so ask the store manager.

Since you'd be sitting at home and you don't seem concerned about water or power interruptions, I'd get a mixture of canned and freeze-dried. At home you should have space to store them.

A vegetable garden would be a good idea as well. That would give you fresh veggies in the warm months.

Concentrate on what you and your family likes in the way of food. Vitamin supplements should be included, and DON'T forget to rotate your stock.